Door lock

Details Door lock Door lock

2007-05-01

2007-05-01

Estremsky, Gary (Department: 3676)

Closure fasteners

Bolts

Sliding and swinging

C292S223000, C292SDIG057

Reexamination Certificate

active

09993200

ABSTRACT:
The solution according to the invention is based upon the knowledge that the undesirable hysteresis of the force-path function in door locks (1) can be avoided or at least minimised if the (frictional) forces acting during transitions from open positions to closed positions and vice versa are minimised and/or avoided. In this respect, the invention is based upon the starting point of at least reducing (frictional) forces acting in bearings for rotatable components (14, 18, 28) of door locks (1) and/or between surfaces (22, 30) displaceable relative to one another. In this manner, it is attained that forces required for a transition from a closed position to an open position essentially correspond to forces required for a transition from the open position to the closed position.

REFERENCES:
patent: 2138251 (1938-11-01), Lindstrom
patent: 2158983 (1939-05-01), Knoll
patent: 2169535 (1939-08-01), Marple
patent: 2240400 (1941-04-01), Johnson
patent: 2349301 (1944-05-01), Overby
patent: 2833578 (1958-05-01), Burke
patent: 3244830 (1966-04-01), Bates
patent: 3328062 (1967-06-01), Geiger
patent: 3670537 (1972-06-01), Horgan
patent: 4497513 (1985-02-01), Sasaki
patent: 4576405 (1986-03-01), Wartian
patent: 4913476 (1990-04-01), Cook
patent: 4997221 (1991-03-01), Tolle et al.
patent: 5305969 (1994-04-01), Odell
patent: 5440103 (1995-08-01), Martin
patent: 5642909 (1997-07-01), Swan et al.
patent: 6106032 (2000-08-01), Och
patent: 6155616 (2000-12-01), Akright
patent: 6290270 (2001-09-01), Spiessl
patent: 4317135 (1994-09-01), None
patent: 19504796 (1996-08-01), None
patent: 19540843 (1997-05-01), None
patent: 19837248 (2000-02-01), None
patent: 2133455 (1984-07-01), None
patent: 2193525 (1988-02-01), None

Affiliated with

Also associated with

Rating

Door lock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Door lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Door lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3822419